180° - 102° = 78°
Correct answer: a.
Answer: x=5/3
Step-by-step explanation:
For this problem, we can use teh information given to write out an equation and solve. Let's use x for the unknown number.
5x+5=2x+10
The left side of the equation comes from the part that says "five times a number plus 5". That is modeled above. The right side of the equation comes from "has the same value as twice the number plus 10".
5x+5=2x+10 [subtract both sides by 2x]
3x+5=10 [subtract both sides by 5]
3x=5 [divide both sides by 3]
x=5/3
Now, we have found the unknown number, x=5/3.
-7. When you look at the graph it is divided into x and f(x). f(x) is the same as y so the question is basically asking you what is x when y is -3. So you just go to the -3 under f(x) and look over to find that the answer is -7
